Machine for cement coating platform soles and covers therefor



Apl'll 12, 1949. w. w. PRUE' 2,465,824

MACHINE FOR CEMENT COATING PLATFORM SOLES AND COVERS THEREFOR Filed July10, 1945 Patented Apr. 12, 1949 MACHINE FOR CEMENT COATING PLAT- FORMSOLES AND cvERs THEREFOR Walter W. Prue, Auburn, Maine, assignor toUnited Shoe Machinery Corporation, Flemington, N. J a corporation of NewJersey I Application'July 10, 1945, Serial No. 604,259

12 Claims.

This invention relates to coating platform soles and covers therefor andis herein embodied in a machine for applying adhesive used for securingthe cover to the sole in the so-called cover-lasting operation.

In the manufacture of large quantities of shoes having yieldableplatform soles the edges of which must be provided with a cover, it hasbeen found convenient by many manufacturers to secure a strip offlexible material to the upper of the shoe, as by stitching, prior tothe lasting operation. The strip is then provided with a coat ofadhesive, hereinafter called cement, and, after having been drawn tautaround the periphery of the sole, is lasted over the margin thereof andheld in place by the adhesive on the cover, usually in coaction withanother band of adhesive on the sole. In a large proportion of suchshoes, the cover material is not only flexible but frequently is flimsyand wrinkled, thus making it difficult to apply cement to it andespecially to limit the band of cement to such a width that there willbe little danger of the accidental sticking of the cover to the edge ofthe sole before the cover-lasting operation. For a similar reason, it isdesired to have the band of cement on the platform sole spaced from theperiphery thereof by a clean margin.

One object of the invention is to provide an improved machine forsimultaneously coating such platform covers and the margins of theassociated platform soles.

Still another object of the invention is to provide improved means forcoating and tensioning the cover to remove the wrinkles and tofacilitate the location of the band of coating material on the cover.

In accordance with one feature of the invention, a combined tensioningand coating roll is employed, engaging the inner surface of a coveralready attached to the shoe. As illustrated, this roll is mounted forfree rotation by frictional engagement with the cover and is supportedupon an axis which is inclined downwardly and forwardly with respect tothe direction of movement of the work. Cement is supplied to theperiphery of the roll for transfer to the cover.

Another feature of the invention lies in the provision of acover-supporting roll extending the whole height of the cover when theshoe is held in inverted position. This roll is positioned opposite tothe combined tensioning and coating roll and, by reason of itsheightwise extent, it serves both to support the cover in contact withthat roll and impress against the work opposite the periphery of theplatform sole, thereby effectively to feed the shoe so as to present thewhole periphery thereof to the coating apparatus.

These-and other features of the invention will best be understood from aconsideration of the following specification taken in connection withthe accompanying drawings, in which Fig. l is a front elevation of thework-engaging parts of the machine, and

Fig. 2 is a side elevation thereof, showing a piece of work in positionfor treatment by the machine.

The invention is illustrated as embodied in a bottom-cementing machineof the type shown in Letters Patent of the United States No. 2,177,666,granted October 31, 1939, upon the application of Wilbur L. M-acKenzieet al., to which reference may be had for description of those parts ofthe machine not herein fully shown. The patented machine was designedfor coating the bottoms of shoes which are 'held in inverted positionand presented to a depending flexible nozzle, such as that shown at II].This nozzle is supported upon a stud l2 carried on theframe I4 and issupplied with coating material under pressure from a can l5 throughconnections, such as the pipe fitting It, containing f3, shut-off valve[8 which is arranged to be rotated under the control of the operator bya rod 20 connected to the valve through a universal joint 22. l

The pipe fitting i6 is connected to a nozzle block 24 releasablysupported upon a bracket 26 attached to the stud l2 and the nozzle blockheld in position on thebracket by means of a latch 28. On the nozzleblock are pivoted fingers 30 which swing on a pivot rod 32 and are urgeddownwardly to the position shown in Fig. 1 by means of a series ofspring wires 34 carried, as in the patented'construction, by a plate 36.The delivery of cement to the outlet openings38 of the yieldably mountedfingers 30 is effected by means of a series of small tubes 40 the lowerends of which are slidably inserted in passages, in the fingers, leadingto the outlet openings. These tubes are carried by a plate 42 andcommunicate with a recess 44 therein which is supplied from the pipefitting l6 through a passage 45 in the block 24. A curved pipe 48,terminating above the fingers, is arranged to deliver drops of sol-'vent thereto from a suitable source of supply so as to keep the fingerspivoting freely as they coat a sole moved from right to left in Fig. 1.

Supported just forward of the yieldable nozzle IOis-a combined covertensioning and-coating roll 50. This roll is provided with verticalflutes and is mounted on a stud 52 which is threaded in a'carrier 54having a threaded stem 55 supported by a bracket 56 which forconvenience is an extension of the spring-carrying plate 36. The carrier54 is adjustable heightwise of the bracket 56 and transversely of. thework. pathin a horizontal. slot 51 therein, and is held in adjustedposition by a threaded collar 58 and a lock nut 60. Cement is deliveredto the periphery of this roll by means of tubes 62 supported in andsupplied from the recess 44 in the same plate 42 which carries the tubesMl for the yieldable nozzle l0. It will be noted that the axis ofrotation of the fluted tensioning and coating roll 50* extendsdownwardly and forwardly with respect to the direction of movement ofwork carriedf-rom right.

to left in Fig. 1. By reason of this inclined relation, any point on thesurface of the roll 50' moves not in a horizontal path but upwardly andto the left in Fig. 1. Thus, as it applies its coatingto the covermaterial, the roll also draws. the cover upwardly away from the platformsole and thus tensions the cover to remove wrinkles andtc draw it. tothe height which it will assume when lasted overthesole. By reasonofthis tensioning effect, the. location, with respect to the sole, of theband of cement on. the cover can be definitelypredetermined; and spacedfrom the corner of the platform sole by such a clean marginthat therewill be little. danger that the released cover will drop backto aposition where theband of cement on it will accidentally stick the coverto the periphery of the platform sole.

Like: the patented machine, the one herein illustrated isprovided-witha-feed roll 64; of yieldable material such as rubber, whichis attached to a. driven shaft 6.6. passing through a movable carrier88: When work is presented to the machine, the" operator depresses atreadle which moves the carrier 68- out to the position shown in Fig. 2where a portion ofthe carrier contacts a rigidly mounted stop Hi andthus determines theoutward'position of'the feed roll 64. The feed rollshown here is, however, of different size and shape from that found inthepatent and has a frusto-conical work-engaging surface 12 whichextends heightwisefar enough toengage and support the whole width orheightwise extent'of a platform cover "secured to the upper 16 of a shoeon a last 18 and provided with a yieldable platform sole 80. The feedroll is positioned, for engagement with the outside of the platformcover" substantially opposite to the roll 50 so that the cover' isgripped between the two and, as the shoe is moved from rightto left(Fig. 1') by the feed roll driven in the direction shown by the arrow,the fluted ro1l50-is, also turned; by frictional engagement with thecover, and effects both the coating Of the inner surface ofthecover and;a tensioningthereof, as described; above. At thesame. time, a band ofcoating material willbe applied bythe nozzle lDito the margin of theplatform sole 8,0 in aposition spacedfrom theperiphery-thereof, asindicated in Fig 2;.so that a clean margin will be leftradjacent to, theperiphery; The width of this cleanmargin may be determined by adjustmentof the. roll carrier.- 54' transversely of; the bracket, 56' along. the.slot 51; thereby, to vary. the relationbetweenthe roll and the nozzle.and hencehetweenzthe feed roll 64 and the nozzle. Thislocates the. edgeof. the-sole with. respect; to. the nozzle.

Havin thus. described, my;v invention, what: I

4 claim as new and desire to secure by Letters Patent of the UnitedStates is:

1. In a machine for coating platform covers attached to shoes,cover-supporting and workfeeding means, and a combined coating andtensioning device operating upon the inner surface of the cover.

2. In a machine for coating platform covers attached to shoes,cover-supporting and workfeeding means, a combined coating andtensioning device operating upon the inner surface of a cover supportedby said means, said device comprising a roll inclined with respect tothe path of movement of the shoe, and means for supplying coatingmaterial to the periphery of said roll.

3 In a machine for coating platform covers attached to shoes,cover-supporting and workfeeding means, a combined coating andtensioning device operating upon the inner surface of the cover, saidlatter device comprising a freely rotatable roll inclined with. respect.to the path of movement of. the shoe;.and means forsupplying' coatingmaterial to the periphery of said. roll.

4". Ina machine for coating platform covers attached to shoes, acombined coating. and tensioning device, and a combined work-feedingandi cover-supporting means coacting with the tensioningdevice anddriven to, enable the operator; to present successive portions of themargin of the cover to said coating device.

5; In a machine for coating platform soles and platform covers attached.to shoes;. a combined work-feeding andv cover-supporting. means,acombined cover-coating, and tensioning device coacting; with thefeeding and supporting: means; said; feeding and supporting means beingdriven to .enable theoperator topresent successive. portions of themargin of the-cover to. said coating means, and-a yieldable nozzlepositioned to apply a. band of coating material to the margin of the.platform sole.

6. In a machine for: coating. platform. covers, a. driven". feed roll.supporting: the outer. face of the cover and engaging: the: shoe to"assist; the

* operator in presenting successive; parts of. the

periphery. of the shoeto the machine; a. cover.- tensioning rollengaging the inside ot the; cover opposite to the feed roll, and means;for: supplying coating material to said tensioning. roll,- the coactionof: said. tensioning roll: with the coversupportingyfeedroll beingeffectivato: cause rota-- tion of the tensioning roll..

7-. In a machine; for coating. progressively the inner margins. ofplatform covers. attached to shoes; having platform soles:, drivenlwork-feedingmeans; supporting: the, cover and. positioned to engage theouter surface of the cover adjacent to; the periphery, of the; platform,a: cover-tensioning: rollopposite to; said feeding means positionedupon: an axis: inclined downwardlyand forwardly with respect to thedirection-of move-- mentzof. the work, and meanszfor'supplyi'ng' coating: material: to-said roll;

8a In a combined platform soleand platform covercoatingmachine, anozzlehavinga series of yieldable fingers, means for supplyingcement tosaid nozzle to coat the margin of the platform sole, work-feeding meanspositioned, to. support the platform cover, a fluted. roll against;which the cover. is pressed by said. feed. means, said. fluted rollbeingmounted. on anaxisinclined. downwardly and-forwardly with respecttot-he. direction. of movement of the work, and a tuheleading fromthe-source of supplyfor the 5 articulated nozzle to the periphery ofsaid inclined roll.

9. In a machine for simultaneously applying coatings to a platform soleand to an associated platform cover, means for supplying coatingmaterial, a yieldable nozzle for coating the .platform sole, a roll forcoating the platform cover, connections embodying a shut-01f valvecommon to both coating devices between the supplying means and saidcoating devices, and means for feeding the work.

10. In a machine for coating platform covers on shoes having platformsoles, a cover-coating roll inclined with respect to the bottom of thesole, and a driven feed roll supporting the outer face of the cover andengaging the full width thereof substantially opposite the cover-coatingroll, said feed roll pressing the cover against the periphery of theplatform sole to make the roll more effective in assisting the operatorto present successive parts of the periphery of the shoe to the machine.

11. In a machine for coating platform covers attached to shoes, rollsarranged at opposite sides of and gripping the cover, means for drivingone roll to feed the shoe, one of said rolls being mounted on an axisinclined downwardly with respect to the bottom of the shoe and forwardlyin the direction of feeding movement, thereby to cause a tensloning ofthe cover, and means to deliver cement to one of the rolls.

12. In a machine for simultaneously coating the margin of the bottom ofa shoe and a projecting flexible cover adapted to be lasted over thebottom of the shoe, coacting adjacent coating devices for applyingcement to the flexible cover material and to the margin of the bottom ofthe shoe, means cooperating with one of said coating devices arranged tofeed the flexible material, and means for causing the latter coatingdevice to tension the material laterally of the feed movement as thematerial is coated.

WALTER W. PRUE.

REFERENCES CITED The following references are of record in the

